1864899336 has 64 divisors (see below), whose sum is σ = 4789509120. Its totient is φ = 604779840.

The previous prime is 1864899331. The next prime is 1864899341. The reversal of 1864899336 is 6339984681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1864899331) and next prime (1864899341).

It is not an unprimeable number, because it can be changed into a prime (1864899331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267981 + ... + 274851.

It is an arithmetic number, because the mean of its divisors is an integer number (74836080).

Almost surely, 2^1864899336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1864899336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2394754560).

1864899336 is an abundant number, since it is smaller than the sum of its proper divisors (2924609784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1864899336 is a wasteful number, since it uses less digits than its factorization.

1864899336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186 (or 7182 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The square root of 1864899336 is about 43184.4802677999. The cubic root of 1864899336 is about 1230.8877931849.

The spelling of 1864899336 in words is "one billion, eight hundred sixty-four million, eight hundred ninety-nine thousand, three hundred thirty-six".